Source Assistant

The SourceAssistant tool (in Wing Personal and Wing Pro) can
be used to display additional information about source symbols in the editor,
auto-completer, and tools such as the Project, SearchinFiles,
PythonShell, DebugProbe, and SourceBrowser.

The display will include links to the point of definition of the selected
symbol, the symbol's type (when available) and a link to the type's point of
definition. Depending on context and symbol type, the Source Assistant will
also display relevant docstrings, call signature, return type, super-classes,
overridden methods.

When invoking a function or method, the Source Assistant will display information
both for the callable being invoked and the current argument or item in the
auto-completer.